rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (10493 ticks this GP) idle=187/1/0x4000000000000000 softirq=21103/21103 fqs=2417
(t=10500 jiffies g=30437 q=505)
rcu: rcu_preempt kthread starved for 5521 jiffies! g30437 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:27000 pid: 15 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
schedule+0x11b/0x1f0 kernel/sched/core.c:6459
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1884
rcu_gp_fqs_loop+0x2bf/0x1080 kernel/rcu/tree.c:1972
rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2145
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt drivers/acpi/processor_idle.c:109 [inline]
NMI backtrace for cpu 0 skipped: idling at acpi_idle_do_entry+0x10f/0x340 drivers/acpi/processor_idle.c:570
NMI backtrace for cpu 1
CPU: 1 PID: 8346 Comm: syz-executor.2 Not tainted 5.15.143-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
rcu_dump_cpu_stacks+0x223/0x390 kernel/rcu/tree_stall.h:349
print_cpu_stall+0x320/0x600 kernel/rcu/tree_stall.h:633
check_cpu_stall kernel/rcu/tree_stall.h:727 [inline]
rcu_pending kernel/rcu/tree.c:3932 [inline]
rcu_sched_clock_irq+0x8d9/0x1150 kernel/rcu/tree.c:2619
update_process_times+0x196/0x200 kernel/time/timer.c:1788
tick_sched_handle kernel/time/tick-sched.c:254 [inline]
tick_sched_timer+0x386/0x550 kernel/time/tick-sched.c:1473
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
__sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:debug_spin_unlock kernel/locking/spinlock_debug.c:102 [inline]
RIP: 0010:do_raw_spin_unlock+0x9d/0x8b0 kernel/locking/spinlock_debug.c:140
Code: 6f 10 4d 89 ec 49 c1 ec 03 41 80 3c 1c 00 74 08 4c 89 ef e8 d5 e8 65 00 65 48 8b 2d 7d 76 9e 7e 49 39 6d 00 0f 85 31 02 00 00 <4d> 8d 77 08 4c 89 f3 48 c1 eb 03 48 b8 00 00 00 00 00 fc ff df 0f
RSP: 0018:ffffc90006c462e0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff8163f904
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880395d2b40
RBP: ffff88803c061dc0 R08: dffffc0000000000 R09: ffffed10072ba569
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff110072ba56a
R13: ffff8880395d2b50 R14: ffffffff89fc93c1 R15: ffff8880395d2b40
__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:175 [inline]
_raw_spin_unlock_bh+0x1f/0x30 kernel/locking/spinlock.c:210
spin_unlock_bh include/linux/spinlock.h:408 [inline]
batadv_tt_local_purge_pending_clients+0x2f1/0x380 net/batman-adv/translation-table.c:3673
batadv_tt_local_resize_to_mtu+0x90/0x130 net/batman-adv/translation-table.c:3957
batadv_update_min_mtu net/batman-adv/hard-interface.c:647 [inline]
batadv_hardif_activate_interface+0x1ca/0x390 net/batman-adv/hard-interface.c:674
batadv_hard_if_event+0xbc/0x17a0 net/batman-adv/hard-interface.c:965
notifier_call_chain kernel/notifier.c:83 [inline]
raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:391
__dev_notify_flags+0x304/0x610
dev_change_flags+0xe7/0x190 net/core/dev.c:8883
vlan_device_event+0x442/0x1dd0 net/8021q/vlan.c:469
notifier_call_chain kernel/notifier.c:83 [inline]
raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:391
__dev_notify_flags+0x304/0x610
dev_change_flags+0xe7/0x190 net/core/dev.c:8883
do_setlink+0xcd1/0x3ae0 net/core/rtnetlink.c:2741
rtnl_group_changelink net/core/rtnetlink.c:3270 [inline]
__rtnl_newlink net/core/rtnetlink.c:3439 [inline]
rtnl_newlink+0x10b0/0x2070 net/core/rtnetlink.c:3549
rtnetlink_rcv_msg+0x993/0xee0 net/core/rtnetlink.c:5630
netlink_rcv_skb+0x1cf/0x410 net/netlink/af_netlink.c:2505
netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline]
netlink_unicast+0x7b6/0x980 net/netlink/af_netlink.c:1356
netlink_sendmsg+0xa30/0xd60 net/netlink/af_netlink.c:1924
sock_sendmsg_nosec net/socket.c:704 [inline]
__sock_sendmsg net/socket.c:716 [inline]
____sys_sendmsg+0x59e/0x8f0 net/socket.c:2429
___sys_sendmsg+0x252/0x2e0 net/socket.c:2483
__sys_sendmsg net/socket.c:2512 [inline]
__do_sys_sendmsg net/socket.c:2521 [inline]
__se_sys_sendmsg+0x19a/0x260 net/socket.c:2519
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f4e7274abe9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4e70c8a0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f4e7286a120 RCX: 00007f4e7274abe9
RDX: 0000000000000000 RSI: 0000000020006440 RDI: 0000000000000008
RBP: 00007f4e7279647a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f4e7286a120 R15: 00007ffd9047c898